Water fountain



FIG. 1 is a front perspective view of a water fountain showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top plan view thereof, with the bottom view being identical; and,

FIG. 4 is a side elevational view thereof, with the opposite side being a mirror image.

The broken lines and surface shading shown in all figures are for illustrative environmental purposes only and form no part of the claimed design. 

The ornamental design for a water fountain, as shown and described. 